成唯識論演祕 5.13

5.13

《中邊》第一但云心所亦緣別相；《瑜伽》第三但說：別境緣可樂等，而無「亦」字，二論合引故云：亦能了可樂等。

The Madhyāntavibhāga, fascicle one, merely states that mental factors also cognize particular characteristics; the Yogācārabhūmi, fascicle three, merely states that particular mental factors cognize agreeable things, etc., without the character "also" (亦). Because the two treatises are cited together, it therefore says: "can also cognize agreeable things, and so forth."